Adapter of extracorporeal blood circulation blood pump and blood pump driving device

Abstract

According to the adapter of the extracorporeal blood circulation blood pump and the blood pump driving device, the structure of the first magnetic rotating part arranged in the adapter is fixed, and the structure of the second magnetic rotating part is adaptively adjusted according to the third magnetic rotating part in the blood pump; in this way, the second magnetic rotating piece can be matched with the third magnetic rotating piece in the to-be-installed blood pump, one adapter can be correspondingly installed on one corresponding blood pump, specifically, only the adapter corresponding to the to-be-installed blood pump needs to be replaced in the using process, the pump driver body does not need to be replaced, and the cost is reduced. Therefore, different blood pumps can be compatibly driven through the adapter, and the blood pumps can be rapidly installed.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of medical devices, and particularly to an adapter for an extracorporeal blood circulation blood pump and a blood pump driving device. Background Art

[0002] Extracorporeal Membrane Oxygenation (ECMO) is mainly used to provide continuous extracorporeal respiration and circulation for patients with severe cardiopulmonary failure to maintain the life of the patients. The core parts of Extracorporeal Membrane Oxygenation (ECMO) are the membrane lung (artificial lung) and the blood pump (artificial heart). When the extracorporeal membrane oxygenation device operates, blood is drawn out of the human body, exchanges and absorbs oxygen through the membrane lung, and discharges carbon dioxide. The blood that has undergone gas exchange returns to the human body under the push of the blood pump. The blood pump usually includes a disposable blood pump and a reusable blood pump driving device. The disposable blood pump transmits blood through the rotation of the internal impeller; the blood pump driving device drives the rotation of the blood pump impeller in a magnetic coupling manner, thereby achieving the function of controlling blood transmission.

[0003] The centrifugal blood pumps of different manufacturers in the existing market are different from each other, which belongs to the bundled sales of equipment consumables. There is temporarily no device that can be compatible with the blood pumps of multiple manufacturers, resulting in a high use cost and limited selection rights for users.

[0004] In addition, even for the blood pumps of the same manufacturer, in the clinical application of ECMO, due to the large individual differences among adults, children, and infants, as well as the differences in the flow rate of circulatory support and the volume of patients, the same blood pump cannot meet the needs, and blood pumps of different sizes and specifications are required, resulting in the need to design multiple pump driving devices for matching applications, resulting in poor product compatibility.

[0005] Patent CN210355495U uses a replaceable adapter to match different blood pumps, and then uses a connection joint to connect the blood pump adapter to the output shaft of the power mechanism, realizing the compatibility of driving different blood pumps. However, with this structure, while connecting the base, it is also necessary to perforate and fix the connecting shaft, which cannot be installed quickly. Summary of the Invention

[0006] Therefore, the embodiments of the present application provide an adapter for an extracorporeal blood circulation blood pump and a blood pump driving device.

[0007] In a first aspect, the embodiments of the present application provide an adapter for an extracorporeal blood circulation blood pump, including: The adapter includes a housing detachably provided on the pump driver body, and a first magnetic rotating member and a second magnetic rotating member are provided in the housing; the first magnetic rotating member and the second magnetic rotating member are connected by a first rotating shaft, and the first magnetic rotating member drives the second magnetic rotating member to rotate through the rotation of the first rotating shaft; A third magnetic rotating member is provided in the blood pump, and the second magnetic rotating member and the third magnetic rotating member are magnetically coupled to each other; The structure of the first magnetic rotating member remains fixed, and the structure of the second magnetic rotating member is adaptively adjusted according to the third magnetic rotating member in the blood pump.

[0008] As a preferred embodiment of the present application, the first rotating shaft includes a first rotating shaft body and a rolling member; An installation portion is provided at a position corresponding to the first rotating shaft body at the bottom of the adapter; The rolling member is arranged in a space formed by the end of the first magnetic rotating member body and the installation portion; The first rotating shaft body is fixedly or movably connected to the rolling member, and the rolling member is movably connected to the installation portion.

[0009] As a preferred embodiment of the present application, a bearing is provided at one end of the first rotating shaft body away from the rolling member, and limiting devices are provided on both the bearing and the rolling member.

[0010] Compared with the prior art, in the adapter provided by the embodiment of the present application, the structure of the first magnetic rotating member in the adapter remains fixed, and the structure of the second magnetic rotating member is adaptively adjusted according to the third magnetic rotating member in the blood pump, so that the second magnetic rotating member can be adapted to the third magnetic rotating member in the blood pump to be installed, and one adapter can be correspondingly installed with one corresponding blood pump. Specifically, in use, as long as the adapter corresponding to the blood pump to be installed is replaced, there is no need to replace the pump driver body, and different-shaped or -sized blood pumps can be compatibly driven through the adapter, and the blood pump can be quickly installed, and there is no need to prepare a large number of drive bodies, which is easy to carry.

[0011] In a second aspect, the embodiment of the present application further provides a blood pump driving device, including the adapter described in the first aspect, and the driving device further includes a pump driver body; The pump driver body includes a power mechanism and a fourth magnetic rotating member. The first magnetic rotating member and the fourth magnetic rotating member in the pump driver body are magnetically coupled to each other; the power mechanism is connected to the fourth magnetic rotating member through a second rotating shaft to provide rotational power for the fourth magnetic rotating member; the rotation of the fourth magnetic rotating member drives the first magnetic rotating member and the second magnetic rotating member to rotate in sequence, and further drives the third magnetic rotating member to rotate.

[0012] As a preferred embodiment of the present application, the pump driver body further includes a fixing seat, and the housing is detachably arranged on the fixing seat.

[0013] As a preferred embodiment of the present application, the first magnetic rotating member includes a first disc body and a first magnetic member, and the first magnetic member is arranged on the first disc body; the second magnetic rotating member includes a second disc body and a second magnetic member, and the second magnetic member is arranged on the second disc body; the fourth magnetic rotating member includes a third disc body and a third magnetic member, and the third magnetic member is arranged on the third disc body. The first magnetic member and the third magnetic member are magnetically coupled to each other.

[0014] As a preferred embodiment of the present application, a protrusion is arranged on a side surface of the housing away from the blood pump, a first groove is arranged on the fixing seat, and the protrusion is arranged in the first groove to fix the adapter.

[0015] As a preferred embodiment of the present application, a plurality of second grooves are arranged on the housing along the circumference of the protrusion, a clamping hole and a clamping platform are arranged in the second groove, a plurality of clamping members corresponding to the second grooves are arranged on the fixing seat along the circumference of the first groove, the clamping members pass through the clamping holes, and after rotating along the center of the first groove, they form a clamping connection with the clamping platform to fix the adapter.

[0016] As a preferred embodiment of the present application, a locking device is further included. The locking device includes a locking button, a locking hole and a locking pin; The locking button is arranged on the outer side surface of the fixing seat, and one end of the locking button passes through the mounting hole and is connected to the locking pin. The locking pin is arranged on the top surface of the fixing seat; a locking hole is arranged at a position corresponding to the locking pin on the housing, and a locking boss is arranged in the locking hole; When the locking button is pressed by an external force and rotated in the first direction, the locking boss is disengaged from the locking pin to unlock the adapter; when the external force is removed and the locking button is rotated in the second direction, the locking pin is inserted into the locking hole and blocked by the locking boss to lock the adapter.

[0017] As a preferred embodiment of the present application, the locking button and the fixed seat are connected by a second elastic member, and when the external force is removed, the second elastic member is used to hold the locking button in the locked position.

[0018] Compared with the prior art, a blood pump driving device provided by an embodiment of the present application can realize compatibility with different blood pumps through an adapter installed on the pump driver body without replacing the pump driver body, and can realize quick installation of the blood pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0020] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope that can be covered by the technical content disclosed in the present invention without affecting the effects that the present invention can produce and the purposes that can be achieved.

[0021] Figure 1 It is a usage state diagram of the adapter provided by the embodiment of the present application; Figure 2 It is an exploded structure schematic diagram of the adapter provided by the embodiment of the present application; Figure 3 For Figure 1 the B-B cross-sectional view of the adapter in Figure 4 It is an exploded structure schematic diagram of the blood pump driving device provided by the embodiment of the present application; Figure 5 It is an exploded structure schematic diagram of the pump driver body provided by the embodiment of the present application; Figure 6 It is a partial three-dimensional cross-sectional view of the locking device in the locked state provided by the embodiment of the present application; Figure 7 For Figure 4 the enlarged view at B in Figure 8 It is a partial three-dimensional cross-sectional view of the locking device in the opened state provided by the embodiment of the present application; Figure 9 For Figure 6 the enlarged view at C in Figure 10 Schematic structural diagram of the lower shell of the housing Figure 11 Schematic structural diagram of the lower shell of the housing Reference numerals

[0022] 1 - Housing; 1 - 1 - Upper shell; 1 - 2 - Lower shell; 2 - Bearing; 3 - Second magnetic rotating member; 4 - First rotating shaft body; 5 - First magnetic rotating member; 6 - Rolling member; 7 - Mounting portion; 8 - First elastic member; 9 - Blood pump; A - Adapter; 10 - Pump driver body; 10 - 1 - First groove; 11 - Fourth magnetic rotating member; 12 - Power mechanism; 13 - Second rotating shaft; 14 - Clamping member; 15 - Second elastic member; 16 - Locking pin; 17 - Locking button; 18 - First direction; 19 - Clamping platform; 20 - Inclined surface; 21 - Clamping hole; 22 - Second groove; 23 - Locking hole; 24 - Protrusion; 25 - Pressing direction; 26 - Locking boss; 27 - Fixed seat; 28 - Second direction Detailed implementation manners

[0023] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention

[0024] As Figures 1 to 3 shown, in a first aspect, an embodiment of the present application provides an adapter A for an extracorporeal blood circulation blood pump. The adapter A is disposed on the pump driver body 10, and a blood pump 9 is installed on the adapter A

[0025] The adapter A includes a housing 1. The housing 1 is detachably disposed on the pump driver body 10. A first magnetic rotating member 5 and a second magnetic rotating member 3 are disposed in the housing 1. The first magnetic rotating member 5 and the second magnetic rotating member 3 are connected by a first rotating shaft. The first magnetic rotating member 5 drives the second magnetic rotating member 3 to rotate by rotating through the first rotating shaft A third magnetic rotating member is disposed in the blood pump 9. The second magnetic rotating member 3 and the third magnetic rotating member are magnetically coupled to each other The structure of the first magnetic rotating member 5 remains unchanged, and the structure of the second magnetic rotating member 3 is adaptively adjusted according to the third magnetic rotating member in the blood pump 9

[0026] In a preferred embodiment of the present application, the first rotating shaft includes a first rotating shaft body 4 and a rolling member 6 An installation part 7 is provided at a position corresponding to the bottom of the adapter A and the first rotating shaft body 4; The rolling element 6 is arranged in a space formed by the end of the first rotating shaft body 4 and the installation part 7; The first rotating shaft body 4 is fixedly or movably connected to the rolling element 6, and the rolling element 6 is movably connected to the installation part 7. Among them, the first rotating shaft body 4 is set to rotate inside the center of the housing 1.

[0027] In the embodiment of the present application, as Figure 3 shown, a bearing 2 is further provided at one end of the first rotating shaft body 4 away from the rolling element 6. A first spherical groove is provided on the end face of the first rotating shaft body 4 close to the rolling element 6. The installation part 7 is slidably fixed to the housing 1 along the axis of the first rotating shaft body 4. A second spherical groove is provided on one side of the installation part 7 facing the first spherical groove, and a rolling element 6 is provided between the first spherical groove and the second spherical groove.

[0028] It should be further noted that the bearing 2 is a deep groove ball bearing, and the rolling element 6 is a ball bearing. Through the combination of the two, the first magnetic rotating member 5 is allowed to have a small deflection swing, which can better adapt to the second magnetic rotating member 3, and the eccentric vibration caused by the adaptation of the two is minimized, reducing the vibration and noise during the operation of the pump driver device. In the embodiment of the present application, limiting devices are provided on both the bearing 2 and the rolling element 6, and the limiting devices can limit the activities of the bearing 2 and the rolling element 6 at the set positions. Preferably, the limiting device can be a limiting ring, and any structure that can keep the bearing 2 stable and fixed is within the protection scope of the present application.

[0029] As a preferred embodiment of the present application, a first elastic member 8 is provided between the installation part 7 and the housing 1. The first elastic member 8 is preferably a spring, and can also be an elastic member such as a wave washer, rubber, or silica gel. The first elastic member 8 can effectively eliminate the axial clearance generated during the manufacturing and assembly processes, avoid the vibration and noise caused by axial movement, and at the same time can also compensate for the clearance caused by the wear of the ball bearing 2, improving the service life and reliability of the product during continuous use.

[0030] The first magnetic rotating member 5 includes a first disc body and a first magnetic member, and the first magnetic member is arranged on the first disc body; the second magnetic rotating member 3 includes a second disc body and a second magnetic member, and the second magnetic member is arranged on the second disc body; in the embodiment of the present application, the first magnetic member and the second magnetic member can be a plurality of evenly distributed magnets, which can be magnetically coupled with a third magnetic rotating member inside the blood pump to perform non-contact torque transmission on the rotating blood pump impeller, and then the blood pump impeller can be rotated through the rotation of the second disc body to enable the blood pump to achieve the function of transporting liquid.

[0031] In the embodiments of the present application, different blood pump adapters A can all be installed and fitted with the pump driver body 10. The blood pump 9 is installed on the adapter A, and the adapter A is installed on the pump driver body 10. In this way, the pump driver body 10 can drive the blood pump 9 to operate through the adapter A.

[0032] It should be further noted that the housing 1 generally consists of a lower housing 1-2 and an upper housing 1-1. Of course, it can also be split into more structural components according to actual manufacturing and assembly considerations, and all of them fall within the scope of protection of this patent.

[0033] For the adapter A provided in the embodiments of the present application, when it is necessary to replace the blood pump 9, only the adapter A matching the blood pump 9 to be replaced needs to be installed on the pump driver body 10, and then the blood pump 9 is installed on the adapter A. In this way, the effect that multiple blood pumps 9 can share the same pump driver body 10 can be achieved.

[0034] Such as Figure 4 and Figure 5 As shown, in the second aspect, the embodiments of the present application also provide a blood pump driving device, including the adapter A described in the first aspect; the driving device further includes a pump driver body 10; The pump driver body 10 includes a power mechanism 12 and a fourth magnetic rotating member 11. The first magnetic rotating member 5 and the fourth magnetic rotating member 11 in the pump driver body 10 are magnetically coupled to each other; the power mechanism 12 is connected to the fourth magnetic rotating member 11 through a second rotating shaft 13 to provide rotational power for the fourth magnetic rotating member 11; the rotation of the fourth magnetic rotating member 11 drives the rotation of the first magnetic rotating member 5 and the second magnetic rotating member 3 in sequence, and further drives the rotation of the third magnetic rotating member.

[0035] In the embodiments of the present application, the first magnetic member and the second magnetic member are generally made of magnetic materials, such as neodymium iron boron, which have relatively large magnetic forces. The first disk body and the second disk body are generally made of magnetic conductive materials, such as carbon steel. In addition to playing a role in fixing the first magnetic member and the second magnetic member, the first disk body and the second disk body can also increase the magnetic force after combining all the first magnetic members and all the second magnetic members, and increase the torque transmitted by magnetic coupling. The first magnetic member and the second magnetic member can be radially cylindrically distributed along the first disk body and the second disk body respectively, or can be evenly distributed on the end faces of the first disk body and the second disk body, and the torque is transmitted through end face magnetic coupling. In order to make full use of space, the embodiments of the present application preferably adopt radially cylindrically distributed magnetic coupling to transmit torque, which reduces the height space while transmitting a relatively large torque.

[0036] The magnetic coupling method in the embodiments of the present application is used to transmit torque, which can avoid the mechanical direct connection of the transmission shaft and facilitate the operation of replacing different adapters.

[0037] Specifically, the adapter A is provided on the pump driver body 10. For the blood pump driving device provided in the embodiment of the present application, in order to drive the rotation of the blood pump 9, a power mechanism 12 and a fourth magnetic rotating member 11 are provided in the pump driver body 10. The power mechanism 12 can drive the second rotating shaft 13 to rotate. Through the magnetic coupling between the fourth magnetic rotating member 11 and the first magnetic rotating member 5, the first rotating shaft is driven to rotate, and then the impeller inside the blood pump 9 is driven to rotate through the magnetic coupling of the second magnetic rotating member 3. In the embodiment of the present application, the power mechanism 12 generally refers to a motor, which can be a brushed motor, a brushless motor, a stepping motor, a servo motor, etc.; the second rotating shaft 13 is the output shaft of the power mechanism 12, and of course, it can also be an independent shaft connected by a coupling.

[0038] In the embodiment of the present application, the adapter A is detachably provided on the fixed seat 27 of the pump driver body 10. The first rotating shaft is set to rotate inside the center of the housing 1. The power mechanism 12 can drive the fourth magnetic rotating member 11 to rotate, and the fourth magnetic rotating member 11 and the first magnetic rotating member 5 can transmit rotation through magnetic coupling. In the present application, the transmission torque is carried out by the magnetic coupling method. The magnetic coupling does not have particularly high requirements for the coaxiality of the rotation transmission, which meets the requirements of detachability. At the same time, the non-contact transmission can also suppress the torsional vibration transmitted through the shaft, further reducing vibration and noise.

[0039] In the embodiment of the present application, the fourth magnetic rotating member 11 includes a third disk body and a third magnetic member. The third magnetic member is provided on the third disk body, and the first magnetic member and the third magnetic member are magnetically coupled. Further, the magnetic members of the first magnetic member and the two magnetic coupling rotor disks can be formed by combining multiple small magnetic members or by integral multi-pole magnetization.

[0040] It should be further noted that the first magnetic member and the third magnetic member usually have multiple uniform small magnetic members arranged in an alternating combination of N poles and S poles, so that a multi-pole magnetic coupling field can be formed to transmit a larger magnetic torque. Of course, the first magnetic member and the third magnetic member are respectively made of a ring-shaped magnetic material. When magnetized, a multi-pole magnetic coupling field with alternating N poles and S poles is formed through a specific magnetizing device, which can also achieve magnetic torque transmission. At the same time, the operation of assembling and combining magnets can be omitted, and the problem of rotational imbalance caused by uneven magnetic force and uneven weight due to the combination of each small magnet can be avoided. In addition, other magnetic field combination torque transmission methods such as applying the structure of the present application also fall within the protection scope of the present application and will not be enumerated one by one here.

[0041] The embodiment of the present application provides a blood pump driving device that is compatible with a variety of pump heads. Adapters A of various specifications are set to match different blood pumps 9. Adapters A of various specifications can be quickly connected to the pump driver body 10 and can transmit torque through magnetic coupling, so that the pump driver body 10 can drive blood pumps 9 of different specifications. The cylindrical protrusion 24 on the outer shell 1 can realize accurate positioning of the adapter A to ensure quick connection.

[0042] As a preferred embodiment of the present application, the pump driver body 10 further includes a fixing seat 27, and the housing 1 is detachably disposed on the fixing seat 27. That is, the adapter A is fixed to the fixing seat 27 of the pump driver body 10 through the housing 1.

[0043] In one embodiment of the present application, Figure 4 and Figure 10 As shown, a protrusion 24 is provided on a side of the housing 1 away from the blood pump 9 , a first groove 10 - 1 is provided on the fixing seat 27 , and the protrusion 24 is arranged in the first groove 10 - 1 so as to fix the adapter A.

[0044] In one embodiment of the present application, Figures 6 to 11 As shown, a plurality of second grooves 22 are provided on the housing 1 along the circumference of the protrusion 24, a snap-in hole 21 and a snap-in platform 19 are provided in the second groove 22, a plurality of snap-in members 14 corresponding to the second groove 22 are provided on the fixing seat 27 along the circumference of the first groove 10-1, the snap-in members 14 pass through the snap-in holes 21, and after rotating along the center of the first groove 10-1, they are snap-fitted with the snap-in platform 19 to fix the adapter A.

[0045] It should be noted that the second groove 22 and the corresponding clip 14 are both arranged around the central axis of the protrusion 24. Preferably, the number of the clip grooves and the clip 14 is 4, and the head of the clip 14 is in a certain "nail shape", that is, the cylinder of the head is larger than the cylinder of the middle connecting part, thus forming a step that can be used for fixation. At the same time, the end of the clip 14 can be provided with a connecting thread to connect and fix with the fixing seat 27, which can achieve uniform fixation, so that the adapter A is fixed evenly, the force is evenly applied and can withstand a large impact load.

[0046] As a preferred embodiment of the present application, Figure 7 As shown, a slope 20 is provided at the connection position between the clamping hole 21 and the clamping platform 19. The slope 20 is a spiral slope, which facilitates the clamping of the clamping member 14 to the clamping platform 19 during assembly, and can rely on the slope 20 to tighten the fixed adapter A.

[0047] As a preferred embodiment of the present application, Figures 5 to 9As shown, it further includes a locking device, and the locking device includes a locking button 17, a locking hole 23 and a locking pin 16; The locking button 17 is arranged on the outer side surface of the fixed seat 27, and one end of the locking button 17 passes through the mounting hole and is connected to the locking pin 16. The locking pin 16 is arranged on the top surface of the fixed seat 27; at a position corresponding to the locking pin 16 on the housing 1, the locking hole 23 is provided, and a locking boss 26 is arranged in the locking hole 23; As Figure 8 and Figure 9 shown, when the locking button 17 is pressed in the pressing direction 25 by an external force, the locking button 17 rotates in the second direction 28, and the locking boss 26 is disengaged from the locking pin 16 to unlock the adapter A. When the external force is removed, as Figure 5 and Figure 6 shown, the locking button 17 rotates in the first direction 18, and the locking pin 16 is inserted into the locking hole 23 and blocked by the locking boss 26 to lock the adapter A.

[0048] The locking device provided by the embodiment of the present application is a pressing and swinging locking device. Cooperating with the clamping hole 21, the clamping table 19 and the clamping member 14, reliable locking can be achieved, ensuring that there will be no accidental unlocking and locking failure after locking. The simple pressing and swinging locking structure can effectively avoid the failure of locking caused by jamming.

[0049] As a preferred embodiment of the present application, as Figure 5 shown, the locking button 17 and the fixed seat 27 are connected by a second elastic member 15. After the external force is removed, the second elastic member 15 is used to keep the locking button 17 in the locked position. In the embodiment of the present application, the second elastic member 15 is a spring.

[0050] The blood pump driving device provided by the present application further includes an identification module (not shown in the figure). Each adapter is provided with different identification information (not shown in the figure), and a corresponding identification device (not shown in the figure) is provided in the pump driver body 10. When the adapter A is correctly installed on the pump driver body 10, the identification device can read the identification information and feed it back to the pump driver body 10. The control part of the pump driver body 10 can then sense the corresponding type of adapter A by identifying the identification information, and can better match the corresponding specification model of the adapter A and the blood pump 9 during the driving process. The identification module can be implemented by technical means such as magnetic strips and two-dimensional codes. For example, a magnetic strip or a two-dimensional code information-bearing device is provided inside the adapter, and a reading device is provided on the pump driver body 10. When the adapter A is installed in place, the information can be identified and read. Of course, the identification module can also be implemented by a combination of relatively simple switches. For example, 2 switches can be used to identify 3 types of adapters. Different push-switch contacts are provided on the adapter, and a switch detection circuit is provided on the corresponding pump driver. Three types of adapters can be identified by realizing three states of "on, off", "off, on", and "off, off" through the push switch.

[0051] Although the present invention has been described in detail above with general descriptions and specific embodiments, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. An adapter for an extracorporeal blood circulation blood pump, characterized in that Comprising: The adapter includes a housing which is detachably arranged on the pump driver body, and a first magnetic rotating member and a second magnetic rotating member are arranged in the housing; the first magnetic rotating member and the second magnetic rotating member are connected by a first rotating shaft, and the first magnetic rotating member drives the second magnetic rotating member to rotate through the rotation of the first rotating shaft. A third magnetic rotating member is arranged in the blood pump, and the second magnetic rotating member and the third magnetic rotating member are magnetically coupled with each other. The structure of the first magnetic rotating member remains unchanged, and the structure of the second magnetic rotating member is adaptively adjusted according to the third magnetic rotating member in the blood pump.

2. The adapter according to claim 1, characterized in that, The first rotating shaft includes a first rotating shaft body and a rolling member. An installation part is arranged at a position corresponding to the first rotating shaft body at the bottom of the adapter. The rolling member is arranged in a space formed by the end of the first magnetic rotating member body and the installation part. The first rotating shaft body is fixedly or movably connected to the rolling member, and the rolling member is movably connected to the installation part.

3. The adapter according to claim 2, wherein A bearing is arranged at one end of the first rotating shaft body away from the rolling member, and limiting devices are arranged on both the bearing and the rolling member.

4. A blood pump driving device, characterized in that, Comprising the adapter according to any one of claims 1 to 3, the driving device further includes a pump driver body. The pump driver body includes a power mechanism and a fourth magnetic rotating member, and the first magnetic rotating member and the fourth magnetic rotating member in the pump driver body are magnetically coupled with each other; the power mechanism is connected to the fourth magnetic rotating member through a second rotating shaft to provide rotational power for the fourth magnetic rotating member; through the rotation of the fourth magnetic rotating member, the first magnetic rotating member and the second magnetic rotating member are driven to rotate in sequence, and further the third magnetic rotating member is driven to rotate.

5. The blood pump driving device according to claim 4, characterized in that The pump driver body further includes a fixing seat, and the housing is detachably arranged on the fixing seat.

6. The blood pump driving device according to claim 4, characterized in that, The first magnetic rotating member includes a first disc body and a first magnetic member, and the first magnetic member is arranged on the first disc body; the second magnetic rotating member includes a second disc body and a second magnetic member, and the second magnetic member is arranged on the second disc body; the fourth magnetic rotating member includes a third disc body and a third magnetic member, and the third magnetic member is arranged on the third disc body, and the first magnetic member and the third magnetic member are magnetically coupled.

7. The blood pump driving device according to claim 5, characterized in that, A protrusion is arranged on a side surface of the housing away from the blood pump, a first groove is arranged on the fixing seat, and the protrusion is arranged in the first groove to fix the adapter.

8. The blood pump driving device according to claim 7, characterized in that, A plurality of second grooves are arranged on the housing along the circumference of the protrusion, a clamping hole and a clamping platform are arranged in the second grooves, a plurality of clamping members corresponding to the second grooves are arranged on the fixing seat along the circumference of the first groove, the clamping members pass through the clamping holes, and after rotating along the center of the first groove, they are clamped with the clamping platform to fix the adapter.

9. The blood pump driving device according to claim 5, characterized in that, It further includes a locking device, and the locking device includes a locking button, a locking hole and a locking pin. The locking button is arranged on the outer side surface of the fixing base, and one end of the locking button passes through the mounting hole and is connected to the locking pin. The locking pin is arranged on the top surface of the fixing base. A locking hole is arranged at a position corresponding to the locking pin on the housing, and a locking boss is arranged in the locking hole. When the locking button is pressed by an external force, the locking button is rotated in a first direction, and the locking boss is disengaged from the locking pin to unlock the adapter. When the external force is removed, the locking button is rotated in a second direction, and the locking pin is inserted into the locking hole and blocked by the locking boss to lock the adapter.

10. The blood pump driving device according to claim 9, wherein, The locking button and the fixing base are connected by a second elastic member. When the external force is removed, the second elastic member is used to hold the locking button in the locked position.

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